2.6 – Network Connections :DHCP Configuration

Choose a study mode

Play Quiz
Study Flashcards
Spaced Repetition
Chat to Lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

Which configuration setting is used to specify how long a workstation can use the same IP address?

  • IP Address Range
  • DNS Server Settings
  • Lease Duration (correct)
  • Subnet Mask

What does a DHCP server use to determine which IP addresses it can assign?

  • A predefined list of MAC addresses
  • A configured IP address range and subnet mask (correct)
  • The current list of connected devices
  • A manually updated list of available IP addresses

Which of the following is NOT typically configured directly within a DHCP server?

  • Voice over IP server options
  • Operating System of the host device (correct)
  • Default gateway setting
  • DNS server IP addresses

What actions can a network administrator perform using a DHCP server's address pool?

<p>Exclude or reserve specific IP addresses within the range (A)</p> Signup and view all the answers

In addition to IP addresses, what else does a DHCP server configure for devices on the network?

<p>DNS server settings and default gateway (D)</p> Signup and view all the answers

What is meant by a 'DHCP reservation'?

<p>A specific IP address assigned to a specific device (A)</p> Signup and view all the answers

Besides a Windows Server, where might you find a DHCP server in a home or small office setting?

<p>On an embedded router (C)</p> Signup and view all the answers

What does the term 'IP scope' generally refer to in the context of DHCP?

<p>The range of IP addresses available for assignment (C)</p> Signup and view all the answers

What range of IP addresses would a DHCP server assign, given a start address of 10.10.10.2 and an end address of 10.10.10.100?

<p>From 10.10.10.2 to 10.10.10.100 (B)</p> Signup and view all the answers

If a DHCP server lease time is configured for 86,400 seconds, how long is the lease in hours?

<p>24 hours (B)</p> Signup and view all the answers

Besides IP address and lease time, what other configuration values are mentioned in the content as being assigned by the DHCP server?

<p>Gateway and DNS configurations (D)</p> Signup and view all the answers

What is a dynamic DHCP assignment?

<p>A temporary assignment of an IP address from an available pool (C)</p> Signup and view all the answers

What is the purpose of a DHCP address reservation?

<p>To ensure a device always receives the same IP address. (C)</p> Signup and view all the answers

What is the basis of configuring a DHCP address reservation?

<p>MAC address (C)</p> Signup and view all the answers

What is the result of an expired DHCP lease?

<p>The IP address will be released and available for other devices. (A)</p> Signup and view all the answers

What is the purpose of the T1 timer in a DHCP lease process?

<p>To ensure the device still needs the same IP Address (B)</p> Signup and view all the answers

When does the T1 timer typically activate during a lease period?

<p>Halfway through the lease (D)</p> Signup and view all the answers

When does the T2 timer activate during a lease period?

<p>After a period of time has elapsed, after the T1 timer has not been able to renew (A)</p> Signup and view all the answers

What happens after a device successfully contacts the DHCP server after the T1 timer?

<p>The lease time is reset and a new lease period begins. (B)</p> Signup and view all the answers

If the lease time is 8 days, when would the T2 timer activate, assuming the T1 check didn’t occur?

<p>After 7 Days (C)</p> Signup and view all the answers

What does a device do if it cannot reach the DHCP server after multiple attempts during the T2 timer?

<p>The lease is terminated and the IP address is released. (D)</p> Signup and view all the answers

What is the name for a DHCP assignment which ensures a device always receives the same IP and it is never given to another device?

<p>DHCP reservation (C)</p> Signup and view all the answers

Flashcards

IP Address Range

The range of IP addresses that a DHCP server is configured to assign to devices on the network.

Lease Duration

The duration for which a device can hold onto an IP address assigned by the DHCP server.

DHCP Reservation

A setting that allows you to specify which IP address should always be assigned to a particular device.

IP Address Exclusion

A list of IP addresses that are excluded from the pool of available IP addresses that the DHCP server can assign.

Signup and view all the flashcards

DHCP Options

Additional parameters that the DHCP server can configure for devices, such as the IP address of a DNS server or a default gateway.

Signup and view all the flashcards

IP Address Pool

A set of IP addresses within an IP address range from which devices can be assigned IP addresses.

Signup and view all the flashcards

IP Subnet

A setting that allows the DHCP server to assign IP addresses to devices from a specific subnet.

Signup and view all the flashcards

Windows DHCP Server

A DHCP server that runs on a dedicated server device, typically used in larger networks.

Signup and view all the flashcards

MAC Address

A unique identifier assigned to a device on a network. It's used to locate and communicate with the device.

Signup and view all the flashcards

DHCP (Dynamic Host Configuration Protocol)

A protocol that dynamically assigns IP addresses to devices on a network. This allows devices to connect to the network without requiring manual configuration.

Signup and view all the flashcards

DHCP Lease

The process of a DHCP server assigning an IP address to a device for a specific period of time.

Signup and view all the flashcards

Lease Time

The time period for which a device can use a DHCP-assigned IP address before it needs to renew the lease.

Signup and view all the flashcards

Automatic DHCP Assignment

A DHCP assignment that allows a device to use an IP address that was previously assigned to it, if the address is available.

Signup and view all the flashcards

Dynamic DHCP Assignment

A temporary DHCP assignment that allows a device to use any available IP address from a pool.

Signup and view all the flashcards

T1 Timer

A timer that checks in with the DHCP server halfway through the lease time to renew the lease.

Signup and view all the flashcards

T2 Timer

A timer that checks in with the DHCP server if the T1 timer fails to renew the lease. It's triggered 87.5% through the lease duration and allows the device to rebind with a redundant DHCP server.

Signup and view all the flashcards

Redundant DHCP Server

A DHCP server that is available as a backup in case the primary DHCP server fails.

Signup and view all the flashcards

Lease Release

The process of manually releasing an IP address back to the DHCP server and requesting a new one.

Signup and view all the flashcards

Lease Renewal

The process of renewing an IP address by contacting the DHCP server and requesting a new lease.

Signup and view all the flashcards

Gateway

The IP address used for communication with devices on the network.

Signup and view all the flashcards

DNS (Domain Name System)

A service that resolves domain names into IP addresses. It allows devices to find websites and other services based on their names.

Signup and view all the flashcards

Study Notes

DHCP Server Configuration

  • IP Address Range: DHCP server needs a defined IP address range (e.g., 192.168.1.0/24) for assignment.
  • Subnet Mask: The subnet mask associated with the IP range is crucial.
  • Lease Duration: Configure how long a device can hold an IP address.
  • DNS Server: Configure the DNS server IP address for clients.
  • Default Gateway: Configure the default gateway IP address.
  • Optional Configurations: Include settings for VoIP gateways and other network services.

DHCP Server Functionality and Operation

  • Address Pool: The DHCP server selects from an available IP address pool.
  • IP Scopes: DHCP server can manage large contiguous IP address ranges.
  • DHCP Reservations: Exceptions can be made to exclude specific IP addresses.

DHCP Server Examples

  • Windows Server DHCP: DHCP Server on a Windows Server device.

    • Scope: Defines the IP address range handled by the DHCP server (e.g., 165.245.44.0).
    • Address Pools: Inside the scope, defined address pools for assigning.
    • Address Leases: The server keeps record of previously assigned IPs.
    • IP Reservations: Explicitly assign a specific IP to a device.
    • Scope Options: Add additional parameters like VoIP gateway addresses.

  • Embedded Router DHCP: DHCP server on an embedded router.

    • Example Scope: 10.10.10.2 to 10.10.10.100.
    • Lease Time: Measured in seconds (e.g., 86,400 seconds = 24 hours).
    • Gateway: Configure default gateway IP address(e.g., 10.10.10.1).
    • DNS Configuration: Configure DNS settings for end devices.

DHCP Address Assignment

  • Dynamic Assignment: Devices receive a temporary IP address from the pool.
  • Automatic Reassignment: Previous IP assignment will be reused if available.
  • DHCP Reservation: Allows a device to always receive the same IP (usually linked to a MAC address).
  • Static Assignment: Another term for DHCP reservation.
  • IP Reservation: Another term for DHCP reservation.

DHCP Lease Management

  • Lease Expiration: Assigned IP address is returned to the pool after the lease expires.
  • T1 Timer: Checks in with the server halfway through the lease period.
  • T2 Timer: Attempts to rebind with a redundant DHCP server nearing the lease end.
  • Reallocation: Device renews lease or manually releases IP.
  • Rebinding: Device attempts to re-acquire the original IP on loss of the initial DHCP server.
  • MAC Address: Used to permanently assign DHCP addresses.

DHCP Lease Time Example

  • Lease Time: 8 days
  • T1 Timer: 4 days (50% of lease time)
  • T2 Timer: 7 days (7/8 of lease duration)

Studying That Suits You

Use AI to generate personalized quizzes and flashcards to suit your learning preferences.

Quiz Team

More Like This

Use Quizgecko on...
Browser
Open
Browser
Browser